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作者：Soloperto, Raffaele; Mesbah, Ali; Allgower, Frank
作者单位：University of Stuttgart; Swiss Federal Institutes of Technology Domain; ETH Zurich; University of California System; University of California Berkeley
摘要：In this article, we propose a novel model predictive control (MPC) framework for output tracking that deals with partially unknown constraints. The MPC scheme optimizes over a learning and a backup trajectory. The learning trajectory aims to explore unknown and potentially unsafe areas, if and only if this might lead to a potential performance improvement. On the contrary, the backup trajectory lies in the known space, and is intended to ensure safety and convergence. The cost function for the...
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作者：Wang, Bo; Tian, Yu-Ping; Han, Zhimin
作者单位：Hangzhou Dianzi University
摘要：The quadratic Lyapunov function-based method for consensus analysis of discrete-time single-integrator multiagent systems (MASs) in general time-varying directed networks is not well developed, whereas for continuous-time cases remains blank. This note develops this method for both discrete-time and continuous-time MASs with a constant-gain protocol when the network is uniformly strongly connected. By proving the convergence to zero of quadratic Lyapunov functions, we first establish the expon...
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作者：Zhang, Tianliang; Zhang, Weihai
作者单位：Qingdao University of Technology; Nanjing University of Science & Technology; Shandong University of Science & Technology
摘要：This note gives necessary and sufficient conditions for two quadratic equalities to hold based on Moore-Penrose pseudoinverse. The obtained results generalize the well-known identity x(T )Ax + x(T)b + b(T)x =(x + A(-1)b)(T )A(x + A(-1)b) - b(T)A(-1)b to the case of the nonexistence of A-1 . As applications, the previous results on indefinite stochastic linear quadratic optimal control can be easily retrieved, and some consequences on stochastic H-infinity control and nonlinear optimal control ...
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作者：Yang, Hongjiu; Cao, Jiang; Yuan, Yuan; Wang, Jin
作者单位：Tianjin University; Northwestern Polytechnical University
摘要：To investigate modulus consensus on multiple interdependent topics with heterogeneous logical relationships, a comprehensive opinion dynamics model is proposed in a time-varying influence network. There exist cooperative and antagonistic interpersonal interactions in the time-varying influence network. A logic matrix is designed to describe the heterogeneous logical relationships within multiple interdependent topics. Based on graph theory, both convergence and modulus consensus are shown for ...
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作者：Lan, Jianglin; Zhao, Dezong
作者单位：University of Glasgow
摘要：This article addresses the problem of finding the linear quadratic regulator (LQR) weights such that the associated discrete-time algebraic Riccati equations admit a common optimal stabilizing solution. Solving such a problem is key to designing LQR controllers to stabilize discrete-time switched linear systems under arbitrary switching, or stabilize polytopic systems (e.g., Takagi-Sugeno fuzzy systems and linear parameter varying systems) in the entire operating region. To ensure problem trac...
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作者：Song, Yue; Hill, David J.; Liu, Tao; Zhang, Xinran
作者单位：Tongji University; Tongji University; University of Hong Kong; Monash University; Beihang University
摘要：The impasse surface is an important concept in the differential-algebraic equation (DAE) model of power systems, which is associated with short-term voltage collapse. This article establishes a necessary condition for a system trajectory hitting the impasse surface. The condition is in terms of admittance matrices regarding the power network, generators, and loads, which specifies the pattern of interaction between those system components that can induce voltage collapse. It applies to generic...
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作者：Zhang, Dandan; Jin, Xin; Su, Hongye
作者单位：Zhejiang University; East China University of Science & Technology
摘要：In this article, we propose a new random reset rule for attitude control systems, where a new Lyapunov-Foster function implies the robust global attitude control without adding any constraints on the random reset rule, except the support domain for the involved random variables. Compared with deterministic binary logic variables, random variables introduce an automatically adjusted hysteresis half-width for each reset process, thus bring a flexible tradeoff between the hysteresis-induced ineff...
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作者：Habibi, Hamed; Fernando, Tyrone; Darouach, Mohamed
作者单位：University of Western Australia; Curtin University; Universite de Lorraine; Universite de Lorraine
摘要：In this article, a functional observer for continuous systems with sampled measurement is designed for a class of nonlinear systems, operating under unknown inputs, and the existence conditions are derived. The nonlinear function, as a function of full states, is decomposed to Lipschitz term and an unknown one. The stability and boundedness of the estimation dynamics are analyzed and accordingly, the design procedure is formulated as a linear matrix inequality problem. Moreover, the design alg...
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作者：Li, Nan; Zhang, Kaixiang; Li, Zhaojian; Srivastava, Vaibhav; Yin, Xiang
作者单位：Auburn University System; Auburn University; Michigan State University; Michigan State University; Shanghai Jiao Tong University; Shanghai Jiao Tong University
摘要：Cloud computing creates new possibilities for control applications by offering powerful computation and storage capabilities. In this article, we propose a novel cloud-assisted model predictive control (MPC) framework in which we systematically fuse a cloud MPC that leverages the computing power of the cloud to compute optimal control based on a high-fidelity nonlinear model (thus, more accurate) but is subject to communication delays with a local MPC that relies on simplified linear dynamics ...
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作者：Aleksandrov, Alexander; Fradkov, Alexander; Semenov, Aleksandr
作者单位：Saint Petersburg State University; Russian Academy of Sciences
摘要：The problem of the equidistant deployment of mobile agents on a line segment is studied. It is assumed that agent dynamics are modeled by linear second-order models. Two types of control protocols are studied: with and without relative velocity measurements. For any positive damping coefficient of agents, we propose a control protocol that ensures the achievement of the control goal and possesses robustness for any communication delays and any switching topology. The designed multiagent system...
